Christian Pulisic has come to the part in the Premier League.
The American midfielder was a big-money signing in the January transfer window, although he did not arrive in west London until the summer, spending the second half of last season on loan with previous club Borussia Dortmund.
For a young player coming in to a new league, it was always going to take time to adapt to the Premier League.
But it looks like he has settled in now.
Chelsea were victorious over Burnley at Turf Moor on Saturday evening, with Pulisic scoring a perfect hat-trick - left foot, right foot and header.
They were his first goals in a Chelsea shirt since his £56.8million move from Dortmund and went some way to showing why the Blues made a massive outlay on the American midfield man.
Pulisic was lively throughout and won the man of the match award for his display.
There were obviously comparisons with Belgian superstar Eden Hazard when he joined the club, given Hazard left for Real Madrid in the summer.
He was touted as the Belgian's replacement and those comparisons have only grown now with his hat-trick for Frank Lampard's side.
Hazard himself has struggled to adapt to life in La Liga with Los Blancos, and Pulisic scoring a treble left a number of Blues supporters saying "Hazard who?"
A Chelsea team with Hazard in it is obviously a better one than one without, and the Blues supporters would love to have him back at Stamford Bridge (we think), but Pulisic's presence has gone some way to making them feel better about his departure.
